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Finding the Fourth Proportional to 123,770.32, 170,805.24 and 67,181.68

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Solution

The fourth proportional to 123,770.32, 170,805.24 and 67,181.68 is: 92,711.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,770.32 : 170,805.24 = 67,181.68 : x
  2. Step 2: Convert to fraction form
    123,770.32/170,805.24 = 67,181.68/x
  3. Step 3: Cross multiply
    123,770.32x = 170,805.24 × 67,181.68
  4. Step 4: Simplify right side
    123,770.32x = 11,474,982,976.00
  5. Step 5: Solve for x
    x = 11,474,982,976.00/123,770.32
  6. Step 6: Final answer
    x = 92,711.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.